Segment Information (Schedule Of Operating Results By Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 segments	Jun. 30, 2012	Dec. 31, 2012
Segment Reporting Information [Line Items]
Number of Operating Segments			3
Net interest income	$ 54,712	$ 58,680	$ 110,165	$ 120,408
Provision for loan losses	673	5,238	1,002	13,576
Other income and security gains	19,298	17,508	38,103	34,961
Gain on sale of the Vision business	0		0	22,167
Noninterest Expense	46,570	45,804	92,668	94,274
Income (loss) before income taxes	26,767	25,146	54,598	69,686
Income Tax Expense (Benefit)	6,733	6,260	13,854	19,325
Net income	20,034	18,886	40,744	50,361
Assets	6,640,473	6,705,574	6,640,473	6,705,574	6,642,803
PNB [Member]
Segment Reporting Information [Line Items]
Net interest income	51,736	56,022	104,471	111,868
Provision for loan losses	2,122	3,756	5,252	8,428
Other income and security gains	18,536	17,700	36,408	34,361
Noninterest Expense	40,408	37,260	80,732	75,316
Income (loss) before income taxes	27,742	32,706	54,895	62,485
Income Tax Expense (Benefit)	7,420	9,223	14,633	17,441
Net income	20,322	23,483	40,262	45,044
Assets	6,519,766	6,535,709	6,519,766	6,535,709
GFSC [Member]
Segment Reporting Information [Line Items]
Net interest income	2,238	2,305	4,371	4,516
Provision for loan losses	210	200	420	450
Other income and security gains	(3)		(1)
Noninterest Expense	810	706	1,596	1,427
Income (loss) before income taxes	1,215	1,399	2,354	2,639
Income Tax Expense (Benefit)	425	490	824	924
Net income	790	909	1,530	1,715
Assets	50,307	48,763	50,307	48,763
SEPH [Member]
Segment Reporting Information [Line Items]
Net interest income	(347)	(1,125)	(1,002)	1,485
Provision for loan losses	(1,659)	1,282	(4,670)	4,698
Other income and security gains	645	(275)	1,476	449
Gain on sale of the Vision business				22,167
Noninterest Expense	3,909	5,999	7,253	14,164
Income (loss) before income taxes	(1,952)	(8,681)	(2,109)	5,239
Income Tax Expense (Benefit)	(683)	(3,041)	(738)	1,820
Net income	(1,269)	(5,640)	(1,371)	3,419
Assets	78,993	140,051	78,993	140,051
All Other [Member]
Segment Reporting Information [Line Items]
Net interest income	1,085	1,478	2,325	2,539
Provision for loan losses
Other income and security gains	120	83	220	151
Noninterest Expense	1,443	1,839	3,087	3,367
Income (loss) before income taxes	(238)	(278)	(542)	(677)
Income Tax Expense (Benefit)	(429)	(412)	(865)	(860)
Net income	191	134	323	183
Assets	$ (8,593)	$ (18,949)	$ (8,593)	$ (18,949)